What Is Hard Coat Anodiseren?
Hardcoat-anodiseren is een methode voor het anodiseren van aluminium. Anodiseren is een elektrochemisch proces waarbij oppervlakte-aluminium wordt omgezet in aluminiumoxide. Anodiseren verbetert de weerstand van de metalen tegen corrosie, slijtage en verhoogt de duurzaamheid. Anodiseren met een harde laag verbetert deze eigenschappen nog verder.
Hard Coat Anodizing
Anodizing is designated as Type I or Type II. Hardcoat anodizing is referred to as Type III anodizing.
The Hard Coat Process
Hard anodizing or hard coating uses a sulfuric acid electrolyte to convert the aluminum surface to aluminum oxide. The sulfuric acid bath is approximately 32 graden F, with a current density of 23 naar 37 amps. The time to hard coat is from approximately 20 minutes to 2 uur. The alloy and coating thickness determines the amount of time.
Legeringen
Aluminum alloys will accept anodizing. Alloys higher in aluminum with less copper and silicone will accept the hard coat process better. The type of alloy changes the rate the coating builds up.
Kleur
Hard coat anodizing colors aluminum gray. It can also be dyed, but the colors don’t come out as vibrant as they do with Type I or II anodizing.
Benefits of Hard Coat
Hard coat anodizing gives several advantages over anodizing. Onder hen, the metal is less resistant to abrasion, wears better, is harder and resists corrosion.